84x^2-238x-196=x

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Solution for 84x^2-238x-196=x equation:


Simplifying
84x2 + -238x + -196 = x

Reorder the terms:
-196 + -238x + 84x2 = x

Solving
-196 + -238x + 84x2 = x

Solving for variable 'x'.

Reorder the terms:
-196 + -238x + -1x + 84x2 = x + -1x

Combine like terms: -238x + -1x = -239x
-196 + -239x + 84x2 = x + -1x

Combine like terms: x + -1x = 0
-196 + -239x + 84x2 = 0

Begin completing the square.  Divide all terms by
84 the coefficient of the squared term: 

Divide each side by '84'.
-2.333333333 + -2.845238095x + x2 = 0

Move the constant term to the right:

Add '2.333333333' to each side of the equation.
-2.333333333 + -2.845238095x + 2.333333333 + x2 = 0 + 2.333333333

Reorder the terms:
-2.333333333 + 2.333333333 + -2.845238095x + x2 = 0 + 2.333333333

Combine like terms: -2.333333333 + 2.333333333 = 0.000000000
0.000000000 + -2.845238095x + x2 = 0 + 2.333333333
-2.845238095x + x2 = 0 + 2.333333333

Combine like terms: 0 + 2.333333333 = 2.333333333
-2.845238095x + x2 = 2.333333333

The x term is -2.845238095x.  Take half its coefficient (-1.422619048).
Square it (2.023844956) and add it to both sides.

Add '2.023844956' to each side of the equation.
-2.845238095x + 2.023844956 + x2 = 2.333333333 + 2.023844956

Reorder the terms:
2.023844956 + -2.845238095x + x2 = 2.333333333 + 2.023844956

Combine like terms: 2.333333333 + 2.023844956 = 4.357178289
2.023844956 + -2.845238095x + x2 = 4.357178289

Factor a perfect square on the left side:
(x + -1.422619048)(x + -1.422619048) = 4.357178289

Calculate the square root of the right side: 2.087385515

Break this problem into two subproblems by setting 
(x + -1.422619048) equal to 2.087385515 and -2.087385515.

Subproblem 1

x + -1.422619048 = 2.087385515 Simplifying x + -1.422619048 = 2.087385515 Reorder the terms: -1.422619048 + x = 2.087385515 Solving -1.422619048 + x = 2.087385515 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.422619048' to each side of the equation. -1.422619048 + 1.422619048 + x = 2.087385515 + 1.422619048 Combine like terms: -1.422619048 + 1.422619048 = 0.000000000 0.000000000 + x = 2.087385515 + 1.422619048 x = 2.087385515 + 1.422619048 Combine like terms: 2.087385515 + 1.422619048 = 3.510004563 x = 3.510004563 Simplifying x = 3.510004563

Subproblem 2

x + -1.422619048 = -2.087385515 Simplifying x + -1.422619048 = -2.087385515 Reorder the terms: -1.422619048 + x = -2.087385515 Solving -1.422619048 + x = -2.087385515 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.422619048' to each side of the equation. -1.422619048 + 1.422619048 + x = -2.087385515 + 1.422619048 Combine like terms: -1.422619048 + 1.422619048 = 0.000000000 0.000000000 + x = -2.087385515 + 1.422619048 x = -2.087385515 + 1.422619048 Combine like terms: -2.087385515 + 1.422619048 = -0.664766467 x = -0.664766467 Simplifying x = -0.664766467

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.510004563, -0.664766467}

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